Forging machine



- Oct. 26 1926' H. c. JOHANSEN FOHGING MACHINE Filed Oct. 14, 1921 2 SheetsJ-Sheet 1 J8 :77 171126 HarriyCiJaiwu H. C. JOHANSEN FORG'ING MACHINE Oct. 26

2 Sheets-Sheet 2 Filed Oct.

Patented Oct. 26, 1926.

UNITED STATES PATENT OFFICE.

HARRY C. JOHANSEN, OF CHICAGO, ILLINOIS, ASSIGNQB TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

FORG ING MACHINE.

Application filed October 14, 1921. Serial No. 507,622.

My invention relates to forging machines, and more particularly to forging machines for use in the sharpening of cutter bits and similar devices.

5 An object of my invention is to provide an improved forging machine. Another object of my invention is to provide an improved torging machine having improved means for the discharge of finished work pieces therefrom; A further object of my invention is to provide an improved forging machine wherein the blanks may be rapidly brought to the desired shape and difficulty due to jamming prevented. A still further object of my invention is to provide an improved forging machine in which the blanks are locked in proper position relative to the dies during the forging operation. Other objects and advantages of my invention will hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice,

In these drawings,--

Fig. 1 is a side elevation of a bit sharpening machine constituting the illustrative form of my invention, certain concealed parts being indicated by dotted lines.

Fig. 2 is a plan view of the mechanism shown in Fig. 1 with parts broken away.

Fig. 3 is a view in central vertical section on the line 33 of Fig. 2.

Fig. 4 is an enlarged detail on the same section, additional parts being shown in section.

Fig. 5 is a front elevation of a portion of the machine.

Fig. 6 is a partial sectional line 66 of Fig. 4.

In its illustrative form I have shown my improved forging machine supported upon legs 1 and comprising a main bed casting 2. The bed casting is provided with parallel guides 3 and 4, and in substantially the same horizontal plane with the guides is arranged a transverse crank shaft 5 driven by a comhined fly wheel and driving pulley 6 of considerable mass, and having a crank pin 7 connected by a connecting rod 8 with a cross head 9 slidable in the guides 3 and 4. The erosshead carries therewith and pivoted upon a transverse pivot 10 arranged near the forward end thereof a relatively heavy frame member 11 whose angle of oscillation about the pivot 10 is limited, in a forward direcplan view on tion, by a stud 12 extending through a hole 13 therein, which stud is provided with lock nuts 14: limiting the pivoting movement of the member 11. A heavy spring 15 whose tension may be adjusted by an adjustable plunger 18 extends between the rear end of the pivoted member ll and the crosshead 9 and maintains the member 11 always in the furthest position to which it can turn in a clockwise or forward direction. Pivoted to the casting 11 in front of the pivot 10 upon a pivot 17 is a clapper box 18 in which is rotatably mounted on a shaft 19 an annular die 20 having a forming groove 21 in the periphery thereof. Upon the main or bed frame 2 between and below the guides 3 and 4 is mounted a supplemental frame member 22 which carries a stationary die member 23 whose position is adjustable by an adjusting screw 24, this die being arranged in alinement with the'path of reciprocation of the die 20 and adapted to completely fill the groove in the die as the latter rolls across it. The die 23, as explained above, is mounted upon a supplemental frame 22 and slidable transversely of the latter is a member 25 provided with a bit or blank receiving slot 26 whose hack and side walls are formed in the member 25, but which has an open front member 25 is slid laterally sufiiciently to move the finished blank or hit beyond the side of the supplemental frame 22, the same may fall out by gravity and a sloping finished-blank receiving trough 29 is arranged beneath the point of discharge of the finished pieces to receive them and conduct them to a suitable point.

For the purpose of adjusting the vertical position of the bits in order that sufficient material may be projected into the path of the moving die 20 to fill out completely the point of the bits which are .to be formed, I provide a sliding wedge 30 having an inclined surface 31 upon which the lower edge of a blank 32 is adapted to rest, the wedge member 30 having a rack 33 formed at the bottom thereof and being longitudinally movable by a toothed sector 34: secured upon a rock shaft 35. The latter is provided with an operating lever 36 and is adjustable relative to, and adapted to be held in adjusted position by a sector rack 37, a manually releasable pawl or latch 88 being provided for the purpose of locking the same.

For the purpose of controlling the start ing and stopping of the reciprocation of the movable die 20, I provide a clutch mechanism 3.9, conventionally illustrated, and controlled by a foot lever 10. It will also be noted that a .sprin applied brake band surrounds the .shaft 0 and interrupts the rotation thereof promptly after the clutch 39 is released. At. this pointit is desired to call attention to the fact that as shown in Fig. l, the wedge carrying member 30 projects into a slot 42 in the transversely slidable bit holding and discharging member 25 and locks the same against lateral movement except when the wedge is forced backwardly snffieiently to clear the member 25 entirely. It will thus be evident that when a bit or blank has been inserted in the groove 26 and the we lge 30 moved .so as to project the bit or blank into the path of the roller 20, the slide 25 will be locked in working position and so a perfectly and evenly finished piece must result.

The mode of operation of my improved mechanism will be readily apparent. Assume that the slide 25 is in its proper position with the slot 26 therein in longitudi nal alinement with the stationary die 23 and that the wedge member 30 has been moved into the slot 42 in the slide 25 and locks it against lateral movement. A heated blank is then slipped into the slot 26 and slides down to come to rest upon the inclined surface 31 of the wedge member 30. The treadle 40 is depressed to effect engagement between the driving pulley 6 and the shaft 5. As a result, the crosshead 9 is reciprocated, moving with it the movable die member 20 and the latter rolls over the surface of the bit 82 and the stationary die 23, the operator drawing the lever 36 in a clockwise direction, and so causing the wedge member 30, by means of the surface 31, to gradually raise the blank 82 until sufiicient material has been subjected to action of the rolling die to completely fill out the space between the stationary die, the rear end of the blank, and the path of the rolling die. In case the bit is forced up too rapidly by too rapid a movement of the lever 36, the spring 15 will permit the member 11 to tilt slightly about the pivot 10 and provides sufficient give to prevent stalling of the ma chine or breakage. In case the bit is forced up too far between the time the rolling die has passed over it in a right hand direction and returns to it in a left hand direction,

the clapper box will permit the die to swing in a counterclockwise direction and prevent breakage and damaglng of the blank. When the bit has been finished, the lever 36 will be forced forward withdrawing the member 30 from the slot 4-2 and the lever 27 may then be moved toward the operators right, moving the slide 25 laterally and permitting the automatic discharge by gravity of the blank The slide 25 will then be returned to initial position and the wedge member 30 moved forward to lock in place, and a new heated blank may be inserted and the operation repeated.

l v'hile I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in other forms without departing from its spirit or scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a forging machine, cooperating movable and stationary dies, means for moving a blank laterally from its operative relation to said dies comprising a movably mounted blank holding member, and means whereby movement of said holding member discharges the blank.

2. In a forging machine, cooperating moving and stationary dies, a movable blank holding member, and means whereby its movement discharges a finished work piece, and means for locking said member with the blank in position adjacent the stationary die.

8. In a forging machine, cooperating moving and stationary dies. movable means for holding a blank in juxtaposition to said stationary die for engagement by said moving die, means whereby the movement of said means discharges said blank, and a com ineil blank adjusting and holding means locking member.

In a forging machine, a moving die, a stationary die, means for holding a blank in juxtaposition to the latter including means for moving the blanks in opposite directions, means for adjusting the position of the blank relative to the stationary die to permit ongagement of the blank by the moving die. and an interlocking connection between said holding means and said adjusting means.

5. In a forging machine, relatively movable dies adapt-ed to form the cutting portion of a bit, means for holding a blank in operative relation to said dies prior to any forming operation, and means for movi I said blank to an inoperative posit on with spect to said dies after forming operation and supporting the same while in said latter position.

6. A cutter bit sharpener comprising relatively movable dies. means for holding a blank during an initial forging operation thereon by said dies in a fixed plan-e, means for moving the hit up to and away from said plane of forging while remaining on the same side of said plane and means for discharging said blank when finished.

7. A cutter bit sharpening machine comprising relatively movable forging dies, and means for holding a bit blank in operative relation to said dies prior to any forging operation thereon, said means including a member having a blank receiving slot with an open side through which the blank is discharged.

8. A cutter bitsharpening machine comprising relatively movable dies for forming the cutting portion of a bit, and means for holding a blank in the plane in which said dies operate prior to an initial forging operation thereby, said means including a member having a recess therein with open side and end portions, the opposed walls of aid recess being always relatively fixed.

A cutter bit sharpening machine comprising relatively movable dies for forming the cutting portion of a b t, means for holding a blank in the plane in which said dies operate prior to an initial forging operation thereby said means including a member having a therein with open side and end portions, means whereby the blank d scharged through said open side and means for feeding said blank by abutting the end thereof.

10 A cutter bit sharpening machine comprising relatively movable dies for forming the cutting portion of a bit. means for holding a blank prior to an initial forging operation thereon in the plane in which said dies operate, said means including a member having a recess therein with open side and end portions, and means for moving said member whereby said blank can be discharged through said open side.

11. A. forging machine comprising relatively movable dies adapted to form the eut ting face and sides of a cutter bit, and means for holding a blank in the plane in which said dies operate prior to an initial forgi ig operation by said dies including a plurality of relatively laterally movable members whose relative movement occurs only in a single plane.

12. A cutter bit sharpening machine comprising cooperating relatively movable dies for forming the cutting face and sides of a bit, means for holding a bit blank in the plane in which said. dies operate prior to initial forging operating thereon by said dies, a member for discharging a finished blank, and means for feeding the blank during a forging operation, said latter means being interlocked with said discharge member.

13. A cutter bit forging machine comprising relatively movable dies adapted to form the cutting portion of a cutter bit, means for holding a blank during forming and to discharge the same, and means for feeding said blank during the forging operation in a direction transverse to the relative path of movement of said dies.

14. A cutter bit sharpening machine co mprising a laterally movable blank holder, means for feeding a blank in said holder during the forging operation, and means to interlock said holder and feeding means.

15. A cutter bit sharpening machine com prising means for holding a blank in a position to be forged, means for moving said blank from 'said position for discharging the same, and means for feeding said blank in a direction angularly disposed to the path of movement of the blank during discharge.

16. A cutter bit sharpening machine comprising means for holding a blank in a position to be forged, means for moving said blank from said position for discharging the same, means for feeding said blank in a direction angularly disposed to the path of movement of the blank during discharge, and means whereby said feeding means and discharging means are adapted to be interlocked during a forging operation.

17. A cutter bit sharpening machine comprising a laterally movable blank holder having a slot therein, and means extending within said slot and movable transversely thereof for feeding a blank carried by said holder.

18. A cutter bit sharpening machine comprising means having an opening for holding a blank and movable to different positions, and a secondopening angularly disposed to said other opening, and means cooperating with said second opening for locking said holding means in position.

19. A cutter bit sharpening machine comprising means for holding a blank during a forging operation, means for feeding said blank comprising a member having move ment in one direction transversely of the blank axis, and means for actuating said member including means movable about an axis angularly disposed to the path of move ment of said other means.

20. A cutter bit sharpening machine comprising means for holding a blank during a.

forging operation thereon, means for feeding said blank by moving the same along its longitudinal axis, and means for actuating said latter means including a rack and gear segment.

21. Acutter bit sharpening machine comprising means for holding a blank during a forging operation thereon. means for feeding said blank by moving the same along its longitudinal axis including a member having a cam surface, and means for actuating said cam including gear mechanism including a gear member rotatable on an axis transverse to the path of movement of the cam.

said raised die, and "means 22. A cutter bit sharpening machine comprising means for supporting and slidably engaging a blank during a forging operation thereon, said means including a plurality of cooperating members adapted to have movement in angularly disposed directions and operating and locking means therefor.

23. A cutter bit sharpening machine comprising a base, a normally stationary die carried on said base having a transverse section substantially the same as the transverse section of the cutting portion of a cutter bit formed thereon, and means for adjusting said die.

24. A cutter bit sharpening machine coinprising a base, a normally stationary die carried on said base having a raised transverse section substantially the same as the transverse section of the cutting portion of a cutter bit formed ther on, and means for adjusting said die along its longitudinal axis.

25. A cutter bit sharpening machine comprising a base, a normally stationary die carried on said base having a transverse section substantially the same as the transverse section of the cutting portion of a cutter bit formed thereon, a cooperating forging die, and screw operated means for adjusting said base die along its longitudinal axis whereby the degree of forging of a blank by said dies is maintained constant.

26. A cutter bit sharpening machine comprising a base, a normally stationary raised diehaving a transverse section substantially the same as the transverse section of the cutting portion of a cutter bit formed thereon, means for adjusting said die including a member carried by said base substantially adjacent said die, and a screw extending through said member andengaging said die.

27. A cutter bit sharpening machine comprising a normal stationary die whose transverse section is substantiallythe same as the transverse section of the cutting portion of a cutter bit formed thereon, means for adjusting said die, and rotatable means cooperating with said die and having opposed surfaces the conformation of which is substantially the same as the sides of said die.

28. A cutter bit sharpening machine comprising a raised-die the transverse section of which is substantially identical to the transverse section of thecutting portion of a bitformed thereon. rotatable die means cooperating with said raised die and hav ng opposed surfaces the conformation of which is substantially the same as the sides of for moving said raised die and die means in opposite directions.

29. A cutter bit sharpening machine coniprising araised die the transverse section of which is substantially identical to the transverse section of the cutting portion of a bit formed thereon, rotatable die means cooperating with said raised die and having opposed surfaces the conformation of which is substantiaily the same as the sides of said raised die, and means to adjust said raised die along it longitudinal axis.

30. A cutter bit forging machine comprising a member movable in a predetermined fixed path throughout all forging operations, a die, and means for yieldingly supporting said die on said member.

31. A cutter bit forging machine comprising a member movable in a predetermined fixed path throughout all forging operations, a die carried thereby, and means whereby said die can yield relative to said I member when the amount of metal being forged by said die is excessive.

A cutter bit sharpenin machine comprisin cooperating dies to form a cutting portion of a bit, power actuated means for imparting predetermined movement to one of said dies to effect a forging operation, and means whereby said die can have additional tra-nslatory movements in other paths in a plurality of angularly disposed directions.

A cutter bit sharpening machine comprising cooperating dies to form the cutting portion of a bit, power actuated means for imparting predetermined movement to one of said dies, and means whereby said die can have additional movement in a plu rality of angularly disposed directions, one of said latter movements being yieldingly restrained.

3a. A cutter bit sharpening machine com prising cooperating dies to form the cutting portion of a bit, power actuated means for imparting movement to one of said dies, and means whereby sait die can have additional movement in a plurality of directions, one of said latter movements being yieldingly restrained and the other of said movements being substantially free.

35. A cutter bit sharpening macaine com prising cooperating dies to form the cutting portion of a bit, power actuated means for imparting movement to one of said dies, means whereby said die can simultaneously have additional movements in a pluraiity of directions, one of said latter movements being yieldingly restrained and the other of said movements being substantially free, and means for positively limiting said movements in one direction thereof.

36. A cutter bit sharpening machine comprising relatively movable dies adapted to form the cutting portion of a bit, and means for supporting one of said dies comprising a reciprocable crosshead, a member pivotally mounted thereon, and a member substantially freely pivotally mounted on said latter member and depending therefrom to ca said die.

87. A cutter bit sharpening machine comprising relatively movable dies adapted to form the cutting portion of a bit, and means for supporting one of said dies comprising a reciprocable crosshead, a member pivotally and yieldably mounted thereon, and a inenr ber pivotally mounted on said latter member and depending therefrom to carry said die.

38. A cutter bit sharpening machine comprising relatively movable dies including a roller die adapted to form the cutting portion of a bit, and means for supporting said roller die comprising a reciproeable crosshead, a member pivotally mounted thereon, and a member pivotally mounted on said latter member and depending therefrom to carry said roller die, said latter member be ing adapted to have limited unrestrained movement in one direction and positively restrained movement in its opposite direction.

39. A cutter bit sharpening machine comprising movable dies adapted to form the cutting portion of a bit, means for siiipporting one of said dies comprising a reciprocable crosshead, a member pivotally and yieldingly mounted thereon, a member pivotally mounted on said latter member and depending therefrom to carry said die, said latter member being adapted to have some unrestrained movement in one direction and positively restrained movement in its opposite direction, and means for adjusting the yielding limit of said yieldable member.

40. A cutter bit sharpening machine comprising a supporting frame, guideways dis posed between the upper and lower sides of said frame, a crosshead reciprocably mounted in said guideways, and cooperating dies adapted to form the cutting portion of a cutter bit, one of said dies being yieldably carried by said crosshead and the other by said frame and both of said dies being disposed between the upper and lower sides of said frame.

4-1. A cutter bit sharpening machine comprising a frame, means forming a guideway disposed between the upper and lower sides of said frame, a crosshead reciprocably mounted within said guideways, cooperating dies adapted to form the cutting portion of a cutter bit also disposed between the upper and lower sides of said frame, means for carrying one of said dies on said crosshead, means for supporting the other die by said frame at one end thereof, and actuating means for said crosshead disposed at the other end of said frame and including a rotatable shaft disposed with its axis beyond the ends of the guideway remote from the dies.

42. A cutter bit sharpening machine comprising a frame, means forming a guideway disposed between the upper and lower sides of said frame, a crosshead reciprocably mounted within said guideways, cooperating dies adapted to form a cutting portion of a cutter bit also disposed between the upper and lower sides of said frame, means for yieldably carrying one of said dies on said crosshead, means for supporting the other die by said frame at one end thereof, and actuating means for said crosshead disposed at the other end of said frame, said latter neans including a crank and a connecting rod connected directly to said crosshead.

413. In a forging machine, a die traveling in a fixed path, a stationary die with which said first mentioned die is adapted to co operate, a member having a work piece receiving slot therein and movable into alinement with said stationary die, and means for adjusting the position of a work piece relative to the stationary die interlocking with said movable member to prevent movement thereof.

424:. In a forging machine, a stationary die, a second die movable in a path such that it cooperates with said first mentioned lie, a laterally slidable work receiving member provided with a slot for receiving a work piece, said member being movable to aline said slot with said stationary die, and a wedge adapted to cooperate with a work piece to adjust itsposition relative to said stationary die and having a portion interengaging with said first mentioned member when the latter is in position to hold the work piece alined with the stationary die.

4-5. In a forging mechanism, a stationary die, a movable die adapted to cooperate therewith, and a work holding member movable laterally relative to said stationary die, said work holding member having an open side adapted to be closed by said supporting die and through which a finished work piece may be discharged after lateral move ment thereof.

46. A forging machine for forming cutting ends on tools comprising a die against which the cutting face of the tool is to be formed, die means for forming the other bounding surfaces of the cutting end, and means adapted to hold a blank against lateral movement before being worked upon, said means being normally positioned adjacent said die and movable from such position to discharge a tool.

47. A forging machine for forming cutting ends on tools comprising a die against which the cutting face of the tool is to be formed, die means for forming the other bounding surfaces of the cutting end, means for holding a blank against lateral movement before being worked upon, said means being normally maintained adjacent said die and movable from such position to discharge a tool, and means for locking said holder during tool forming.

48. A forging machine for forming cutting ends on tools comprising a die against which the front face of the tool is to be formed, die means for forming the other bounding surfaces of the cutting end, a tool blank holder arranged adjacent said die and movable from such adjacency to discharge a tool, and means to adjust a blank in said holder.

4L9. A forging machine for forming cutting ends on tools comprising a die against which the front face of the tool is to be formed, die means for forming the other bounding surfaces of the cutting end, a tool blank holc er arranged. adjacent said die and movable from such adjacency to discharge a tool, and means to adjust a blank in said holder during tool forming, said adjusting means being movable to lock said holder during tool forming.

50. In a forging machine, cooperating moving and stationary dies, a blank holding member adapted to hold a blank adjacent said latter die, and means for adjusting said latter die relative to said holder.

51. In a forging machine, cooperating moving and stationary dies, a blank holding member adapted to hold a blank adjacent said latter die, and means to adjust said latter die by moving the same relative to said holder and in a path substantially parallel to the path of movementof said mov able die.

52. In a forging machine, cooperating modng and stationary dies, a blank holding member adapted to hold a blank adjacent said latter die, and means to adjust said latter die by moving the same toward or away from said movable die while keeping said dies in their relative operative positions whereby the degree to which a blank is forged remains constant.

53. In a forging machine, a die carrying member always movable in a fixed path and having a pivot, cooperating movable and stationary dies, and means whereby said movable die can yield about said pivot while continuing at its normal rate of travel.

54:- In a forging machine, cooperating movable and stationary dies having a groove and a raised portion adapted to extend therein, one of said dies being pivotally mounted, and yieldable means for holding the same in normal operative position.

55. In a. forging machine, cooperating die members movable toward each other, means whereby one of said members is adapted to have normal and abnormal movements simultaneously in a plurality of directions while actually forging a member, and means to limit the amount of movement of said dies toward each other.

56. A metal working machine for forming the cutting ends of tools comprising cooperating relatively movable dies, of which one is stationary and the other movable relative to the first while a cutting end is being formed, and a blank positioning device adapted during the operation of shaping the blank to be locked in a position in which it positions a blank adjacent the stationary die and to be movable out of the path of die travel when the work is finished to discharge the same.

57. In a forging machine, a blank support including a plurality of blank engaging members, one movable transversely of the blank axis and the other movable to effect longitudinal movement of the blank, said latter member comprising a wedge.

58. In a forging machine, a blank support including a plurality of blank engaging members, one movable transversely of the blank axis and engaging the blank adjacent one end thereof and the other comprising a wedge movable to effect longitudinal movement of the blank by engaging an end of the blank.

59. In a cutter bit forging machine, a plurality of cooperating dies adapted to form the cutting portion of a bit, means for "ceding said bit along its longitudinal axis including a lever, and pawl and ratchet means for holding said lever in any one of a plurality of positions during feeding of the bit blank.

In testimony whereof I affix my signature.

HARRY G. JOHANSEN. 

